I'm looking into buying a 660 AF and I'm wondering how much better it is than a regular 600 series without autofocus. My concern is that if it doesn't work properly will it be a constant pain to fix and calibrate?

For the price, if it doesn't work, buy another one. Sometimes you can fix the autofocus with the help of another one so you'll have to buy another one ... And it's a pain in the ass to open, get the the replacement part, and solder it, and put it back together without rip the body or / and your finger.... Don't spend anymore than 30 bucks for this model!My two cents...

As long as you focus the right way at the right distance, no matter if it 's not autofocus. But with autofocus you won't get picture that are blurry because of a wrong distance , except if you shake your hand...

No need to wait, it's in milliseconds, you press, autofocus does his job, picture is taken,that's it

i own something like 30 cameras, bought on ebay or in a backyard sale, only one or two were not working, one was an easy fix, one was really deadlike i said , don't spend too much money, you won't be really disappointed in the case it doesn't workthe "best" camera, for some people, the one with the higher price on ebay, the SLR680 or SLR690, is the one known to have serious problem you can't fix by yourself, especially with the flash

I've got mine from eBay two weeks ago, so far I can't tell much so a different from a regular 600 (from the new point of a new polaroid user), AF works well, and you can always find these two cameras at a similar price range, so just go for it

untested camera is kinda risky, but at a low price it's worth a gamble, just set yourself a maximum for the camera and you will get what you want. Mine 660 and Onestep SE was bought untested, so far the 660 works well and SE just needs a minor fix.